Petrographic and geochemical characteristics of Carboniferous plutonic rocks around Erenkaya (Gümüşhane, NE Turkey)
Keywords:
Eastern pontides, Erenkaya (Gümüşhane), carboniferous, whole-rock geochemistry, plutonic rocks
Abstract
In the Eastern Pontides, there are many plutonic rocks of different ages and compositions from Paleozoic to Tertiary. Although Carboniferous plutonic rocks are widely observed as large bodies in the Southern Zone of the Eastern Pontides, they are less common in the Northern Zone and consist of smaller bodies. In this study, Carboniferous plutonic rocks cropping out in Erenkaya (Gümüşhane) and surrounding area in the Southern Zone of the Eastern Pontides were investigated petrographically and geochemically. The studied Carboniferous plutonic rocks are in granodiorite and granite composition and mainly consist of plagioclase, orthoclase, quartz, biotite and hornblende minerals. These plutonic rocks have calc-alkaline character and have high K content. The samples have peraluminous to metallumin characters and have high SiO2 contents (67-75 wt%). They are enriched in-large ion lithophile and light rare earth elements, and depleted in high-field strenght elements. Chondrite-normalized rare earth element distributions are characterized by concave-upwardly shapes (LaN/YbN = 3.57 to 6.90) and show negative Eu anomalies (EuN/Eu* = 0.32 to 0.62). All these features with low molar (Na2O+K2O)/(FeOT+MgO+TiO2), K2O/Na2O, ASI and high (CaO+FeOT+MgO+TiO2) and Na2O contents indicates that the studied Carboniferous rocks may have been formed by partial melting of meta-magmatic lower crustal source rocks.
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Published
2021-12-31
How to Cite
Kaygusuz, A., Aydincakir, E., Yucel, C., & Atay, H. E. (2021). Petrographic and geochemical characteristics of Carboniferous plutonic rocks around Erenkaya (Gümüşhane, NE Turkey). Journal of Engineering Research and Applied Science, 10(2), 1774-1788. Retrieved from http://www.journaleras.com/index.php/jeras/article/view/255
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